These continue to be available (for free) at the iPad App Store, so if you've got one of those, it's still a way to go. But somehow I figured out how to convert these for both Mac and Windows computers, so you can click instead of tap if you prefer, or if you're iPad-less. The easiest way to track these down at the App Store if you do want to try the iPad versions is just to do a search under my name and they'll all come up together.
And of course I hope you find these to be of interest.
